Valve mechanism



W. L. CHURCH VALVE MECHANISM Filed March 30, 1925 INIVENTOR. 06 M Afi m Sept. 13.1927.

Patented Sept. 13, 1927.

WALTER L. cannon, or HOUSTON, TEXAS.

orator...

VALVE MECHANISM.

Application filed March so, 1925. Serial No. 19,373.

well pumps and formed with a novel body formation designed to form a close lit in the working barrel to exclude the passage of fluid or grit and sand between the valve body and the seat in which it is located in said barrel.

Another object of the invention is to pro-.

duce a valve mechanism embodying means for holding the valve unseated, while the pump is being pulled from the well, to permit the fluid in the well tubing, and barrel to drain back into the well during the process of pulling the pump from the well. l Vith the above and other objects in view this invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings wherein Figure 1 shows a vertical sectional view of the valve mechanism located in the pump working barrel. I c I Figure 2 shows a vertical sectional view 30 of the pump showing thestanding valve and traveling valve therein, both valves bef ing shown in elevation, and

Figure 3 showsa cross section of the pump on the line 33 of Figure 1.

Referring now more particularly to the drawings, wherein like numerals of refer-- ence designate similar parts in each of the figures, the numeral 1 designates the working barrel whose lower end has the usual coupling 2. Depending from this coupling there is the usual pipe 3 which extends on down into the .bore.

The traveling valve 4 reciprocates in the working barrel, in the usual way, being operable through the'usual sucker rod 5.

The barrel is connected to the lower end of the pump tubing (not shown) through which the oil is pumped to the ground surface.

The numeral 6 designates the valve body which is threaded into the coupling 2. This.

or converges downwardly. The reduction end of said latch 15.

of the body forms anexternal shoulder 8, which tapers downwardly and forms a close fitting seat on said rib 7 Attached tothe reduced lower end of the valve body there is the usual gas anchor 9.

The upper end of the valve'body is also reduced, forming a neck 10, and driven into this neck. there isthe conventional valve. seat 11 which is'clamped in place by the cage 12, which is screwed onto said neck 10, and confines the ball valve 13.

In withdrawing the pump from the well the; tubing is unscrewed, a section at a time, at the ground surface, and unless the fluid is drained from the tubing, back into the the pump tubing, as the pump is pulled,

which will now be described.

One side of the cage has a lengthwise slot 14, in which is pivoted a latch 15 whose upper end projects into the socket 16 in the upper end of the cage. The lower end of the latch has an inwardly extending, tapering projection 17 adapted to be engaged under the valve 13, to unseat the same. Pivotally mounted on the cage in the socket '16, there is a trip disc 18 which is seated on a coil spring 19 by means of which it is normally held out of contact with the upper When it is desired to pull the pump from the well the traveling valve is lowered and seated on the disc 18 and said disc is there by actuated into contact with the upper end of the latch 15. 'The contacting parts of the disc and latch are outwardly beveled so that the upper end of the latch will be forced outwardly, and the lower end thereof forced inwardly, thus forcing the projection 17 underneath the valve 13 and lifting said valve. The oil in the tubing will then be permitted to drain back into the well while the pump is being pulled.

What I claim is 1. A valve mechanism including a tubular internally threaded member having an internal blank seat, a valve body having external'threads adapted to intermesh with the internal threads of said member and also having a fluid'passageway there'through, an external blank seat on said body located 7 intermediate its ends and beneath the threads thereof, said seats being adapted to abut when the body is screwed into said member to form a fluid tight joint.

A valve mechanism including a tubular member internally threaded at its upper and lower ends and having an internal blank seat between the threads thereof, a valve body having external threads adapted to in tel-mesh with the threads in the upper end of said body and also having a fluid passageway therethrongh, an external blank seat on said body located intermediate its ends and beneath the threads thereof, said seats being adapted to abut when the body is screwed into said member to form a fluid tight joint.

3. A valve mechanism including a tubular member whose internal diameter is reduced intermediate its ends, the reduced portion forniingan internal blank seat, said member being internally threaded above said seat, a valve body having external threads adapted to interinesh with said internal thread and also having a fluid passageway tl'ierethrough, an external blank seat, on said body located intermediate its ends and beneath the threads thereof, said seats being adapted to abut when the body is screwed into said member to form a fluid tight joint, said valve body being reduced above the threads thereof, and beneath the seat thereof respectively.

In testimony whereof I have signed my name to this specification.

WALTER L. CHURCH. 

